Sea water, salt water.
Items float on water because they are less dense than water that it floats on.
Ones with less density than water. No matter what the mass is, as long as it is less dense than water, it will float.
Well it depends on what the 'different' items are.
Water in water sinks/floats depending mostly on salinity and temperature, note that these two items effect the density of water.
I have a marker which float in water.
Items float on water because they are less dense than water that it floats on.
Sink. Items with a density of less than one will float on water.
Ones with less density than water. No matter what the mass is, as long as it is less dense than water, it will float.
your moms verginity
All plastic items float on water, so therefore a plastic boat floats on water.
Ones that have a density lower than 1g/cm3.
Pumice.
Ice is a form of water that will float on the surface of the ocean.
Nonpolar molecules that have a lower density than that of water (<1g/mL) will float above water.
Objects from wood, cork for example.
Well it depends on what the 'different' items are.
Virtually all types of rock will sink in water. The only rock that can float on water is pumice.